defense secretary leon panetta has finished his last official overseas trip. panetta is getting ready to leave the pentagon. he is stepping down after 18 months of fighting to protect the defense budget during a tough fiscal crisis time. panetta has a home and walnut cam in carmel valley here in california. he is expected to return to this area next month. >>> the f.b.i. has joined the investigation into death threats made against a freshman oklahoma congressman and his family. staff members for representative mark wayne mullen have not released details about the threats but say law enforcement is taking them very seriously. mullen has cost only a few votes since being sworn into office on january 3. one of those votes was a no on a measure to provide emergency funding to states hit by superstorm sandy. >>>a gun show in north carolina is back open this morning after a gun went off yesterday, injuring three people. they say a man bought a .12 gauge shotgun into the show to try to sell it but forgot to unload it. it discharged, hitting a woman, man and required